| 1. | The gas hole , shrinkage cavity and crack were eliminated through up - grading technology
并且改进工艺，以消除气孔、收缩和裂纹。 |
| 2. | Solidification process simulation and shrinkage cavity prediction of cylinder head casting
气缸盖铸件凝固过程数值模拟及缩松缩孔预测 |
| 3. | Porsity and shrinkage cavity defects on die castings of motorcycle boxesare introduced , some solutions are used , the results prove that correct runnersare important for decreasing of boxes ' defects
主要采取的解决措施是对压铸模内浇口的设置和右端型芯进行修改。 |
| 4. | Hot runner benefit is delivered at pressure , model can be overcome on certain level the hollow that be not worth as a result of filling makings and forms , shrinkage cavity , be out of shape wait for blemish
热浇口利于压力传递，在一定程度上能克服塑件由于补料不足而形成的凹陷、缩孔、变形等缺陷。 |
| 5. | It is because that the forging and heat treatment can greatly change the mechanical properties of steel , reduce the shrinkage cavity and dispersed shrinkage in metal structure , and keep the organizational structure tighter
通过锻造和热处理，可大大改变钢材的力学性能，减少金属结构内的缩孔缩松现象，使其组织结构更紧密。 |
| 6. | Temperature field of hollow ingot solidification is simulated by fem . to different mould , effect of heat transfer coefficient between inner sleeve and cooling medium and thickness of core refractory on final position of solidification , the highest temperature of inner sleeve against cooling medium , and shrinkage cavity and porosity are compared . in addition , change of temperature in typical position of core refractory is also compared
对空心钢锭凝固过程的温度场进行了有限元分析，对不同锭型结构的芯部换热系数、耐火材料厚度对最终凝固位置、内筒壁最高温度及缩孔疏松的影响进行了对比，并讨论了耐火材料典型部位的温度随凝固时间的变化。 |
| 7. | Abstract : temperature field of hollow ingot solidification is simulated by fem . to different mould , effect of heat transfer coefficient between inner sleeve and cooling medium and thickness of core refractory on final position of solidification , the highest temperature of inner sleeve against cooling medium , and shrinkage cavity and porosity are compared . in addition , change of temperature in typical position of core refractory is also compared
文摘:对空心钢锭凝固过程的温度场进行了有限元分析，对不同锭型结构的芯部换热系数、耐火材料厚度对最终凝固位置、内筒壁最高温度及缩孔疏松的影响进行了对比，并讨论了耐火材料典型部位的温度随凝固时间的变化。 |
| 8. | Abstract : based on equivalent liquid surface descending method ( elsdm ) and isolated melting zone method , a multi - hot - spot and simultaneous shrinkage - feeding method was established to predict the shrinkage cavities of steel casting during solidification simulation . the shrinkage in each hot spot can be simulated and fed dynamically and simultaneously by itself using this method . then two practical steel castings were analyzed by this method
文摘:本文在等效液面收缩法和孤立域法基础上建立了预测铸钢件缩孔的新方法? ?多热节和即缩即补方法，该法实现了对模拟铸件各热节的内部动态瞬时补缩，并采用该方法对两个实际铸钢件进行了缩孔分析。 |
